Rotational excitation of the interstellar NH2 radical by H2
Abstract
We present quantum close-coupling calculations for the rotational excitation of the interstellar amidogen radical NH2 due to collisions with H2 molecules. The calculations are based on a recent, high-accuracy full-dimensional NH4 potential energy surface adapted for rigid-rotor scattering calculations. The collisional cross section calculations are performed for all transitions among the first 15 energy levels of both ortho- and para-NH2 and for total energies up to 1500 cm-1. Both para- and ortho-H2 colliding partners are considered. The cross sections for collision with para- and ortho-H2 are found to differ significantly, the magnitude of the ortho-H2 ones being dominant. No strong propensity rules are observed but transitions with Δkc=0 are slightly favored
- Authors:
-
[1];
[1];
[3]
- CNRS-Univ. du Havre, Le Havre (France)
- Inst. de Planétologie et d’Astrophysique de Grenoble (IPAG), Grenoble (France)
- Univ. of New Mexico, Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Univ. of New Mexico, Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1465745
- Alternate Identifier(s):
- OSTI ID: 1361765
- Grant/Contract Number:
- SC0015997
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Chemical Physics
- Additional Journal Information:
- Journal Volume: 146; Journal Issue: 6; Journal ID: ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Bouhafs, Nezha, Lique, François, Faure, Alexandre, Bacmann, Aurore, Li, Jun, and Guo, Hua. Rotational excitation of the interstellar NH2 radical by H2. United States: N. p., 2017.
Web. doi:10.1063/1.4975324.
Bouhafs, Nezha, Lique, François, Faure, Alexandre, Bacmann, Aurore, Li, Jun, & Guo, Hua. Rotational excitation of the interstellar NH2 radical by H2. United States. https://doi.org/10.1063/1.4975324
Bouhafs, Nezha, Lique, François, Faure, Alexandre, Bacmann, Aurore, Li, Jun, and Guo, Hua. Tue .
"Rotational excitation of the interstellar NH2 radical by H2". United States. https://doi.org/10.1063/1.4975324. https://www.osti.gov/servlets/purl/1465745.
@article{osti_1465745,
title = {Rotational excitation of the interstellar NH2 radical by H2},
author = {Bouhafs, Nezha and Lique, François and Faure, Alexandre and Bacmann, Aurore and Li, Jun and Guo, Hua},
abstractNote = {We present quantum close-coupling calculations for the rotational excitation of the interstellar amidogen radical NH2 due to collisions with H2 molecules. The calculations are based on a recent, high-accuracy full-dimensional NH4 potential energy surface adapted for rigid-rotor scattering calculations. The collisional cross section calculations are performed for all transitions among the first 15 energy levels of both ortho- and para-NH2 and for total energies up to 1500 cm-1. Both para- and ortho-H2 colliding partners are considered. The cross sections for collision with para- and ortho-H2 are found to differ significantly, the magnitude of the ortho-H2 ones being dominant. No strong propensity rules are observed but transitions with Δkc=0 are slightly favored},
doi = {10.1063/1.4975324},
journal = {Journal of Chemical Physics},
number = 6,
volume = 146,
place = {United States},
year = {Tue Feb 14 00:00:00 EST 2017},
month = {Tue Feb 14 00:00:00 EST 2017}
}
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Works referencing / citing this record:
The excitation of NH2 in the interstellar medium
journal, September 2019
- Bouhafs, N.; Bacmann, A.; Faure, A.
- Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 2